In a just universe, Lori Drew would be stoned to death by angry townspeople using the sharpest rocks possible. (Obsidian sounds about right.)

Like women should be stoned for adultery under Sharia law?

Just asking...

Well, since you're just asking, no, this has nothing to do with Sharia law. Stoning is a punishment that's much older than Sharia law, and was used for much more than just adultery back then.

The reason I specified stoning is because it's the most direct expression of a community's condemnation of a person, because everyone with a rock participates. Remember that I specified a just universe, in which (presumably) people could agree on the concept that a 40-something woman anonymously tormenting a teenage girl is inherently evil and not fit to live among the rest of us.